sis-queue: Parent filesystem not given as parameter

[Ralf Hildebrandt]

I tried to change:
mail_attachment_fs = sis posix
to
mail_attachment_fs = sis-queue posix

and immediately failed with:

Failed to initialize user: Namespace '': mdbox: mail_attachment_fs: sis-queue: Parent filesystem not given as parameter

Where do I specify the "Parent filesystem"?

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | https://www.charite.de